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<%
response.setHeader("Pragma","No-cache"); 
response.setHeader("Cache-Control","no-cache"); 
response.setDateHeader("Expires", 0);
// 支持跨域
response.setHeader("Access-Control-Allow-Origin", "*");
%>
[{    
    "id": 1,    
    "text": "浙江",    
    "state": "closed",    
    "children": [{    
        "id": 11,    
        "text": "杭州"   
    },{    
        "id": 12,    
        "text": "宁波"   
    }]    
},{    
    "id": 2,    
    "text": "上海",    
    "state": "closed"   
}]  
    